Interesting. If they have the same amount of traffic, it could be that the higher score one gets more votes up and/or comments here on HP. The Hub score doesn't affect the traffic. After the first week or so, traffic mainly boils down to what Google, Yahoo, Bing... send to your Hubs as a result of web searches.
I don't think that Google, et al, knows anything about Hub Scores.
If it is considered sexism, it is probably because men usually give a cr*p less than women about the subject. C'est la vie.